fix: do not commit `.crush/.gitignore` (#2531)

Andrey Nering created

Having a `.crush/.gitignore` showing on `git diff` just because you
started Crush on a directory is annoying.
Having the file there is enough. We don't want to commit it.

Change summary

.crush/.gitignore              | 5 -----
internal/cmd/gitignore/default | 1 -
2 files changed, 6 deletions(-)

Detailed changes

.crush/.gitignore 🔗

@@ -1,5 +0,0 @@
-# This file is automatically generated by Crush.
-*
-!.gitignore
-!skills/
-!skills/**